Diaphragm-horn.



C. G TROSIEN.

DIAPHRAGM HORN.

APPLICATION FILED Dic. 9, 19H3.

1,218,229. Patented Mar. 6,1917.

' wwf/7m? CHARLES TROSIEN, OF PONTIAC, MICHIGAN, ASSIGNOR OF ONE-FOURTHT0 MARY E. WELCH AND ONE-FOURTH T0 ARTHUR PACK, BOTH OF PONTIAC,MICHIGAN.

DIAPHRAGM-I-IORN.

Speccaton of Letters Patent.

Patented Mar. 6, 1917.

Application filed December 9, 1915. Serial No. 66,009.

To all whom t may concern.'

Be it known that I, CHARLES Gr. TRosInN, a citizen of the United States,residing `at Pontiac, county of Oakland, State of Michigan, haveinvented a certain new and useful Improvement in Diaphragm-Horns, anddev Clare the following to be a full, clear, and exact description ofthe same, such as will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specifica-tion.

This invention relates to a diaphragm horn arranged to be carried by thefan bracket of an automobile and actuated by a cam rotated by the fanpulley.

The object of this structure is to produce a horn actuated by one of therapid 4moving parts of an automobile, and which requires a minimumnumber of parts and occupies as small a compass as possible.

In the drawings,-

Figure is a rear end view of the fan bracket, fan pulley, fan' and thecomplete horn structure, showing` a part of the bell of the horn anddiaphragm in section.

Fig. 2 is a side view 'of the same parts, the pulley belt and diaphragmactuator being partly in section.

a indicates the ordinary fan which is l0- cated behind the automobileradiator (not shown) to cool the internal combustion engine (not shown).Z) designates the fan bracket which is here shown as a separate memberfrom the engine casting but which will be referred to as the fansupport. c indicates the shaft or bearing carried by the bracket or fansupport and upon which the fan a and its pulley wheel e rotate. Thepulley wheel is provided with a hub f over which the actuator g may betightly fitted so that the actuator and the pulley rotate together.

fastened to the diaphragm-holding shell c.

This diaphragm-holding shell 7c engages with the periphery of thediaphragm Z and in conjunction with the flared inner end of the bell mholds the diaphragm. The center zone of the diaphragm is, therefore,free to warp in and out at a very high rate of vibration when theserrated periphery of the actuator strikes the contact button fn, at thecenter of the'diaphragm. A bolt o screws into the diaphragm-carrying arm71, and slidingly protrudes through the diaphragmholding shell 7c. Thatend protruding through the diaphragm-holding shell is provided with ahead to prevent the bolt from passing out of the shell. The coiledspring 29 is interposed between the diaphragm-carrying arm 7L and thediaphragmholding shell 7c and hence normally tends to force thediaphragm-holding shell and the diaphragm away from thediaphragm-carrying arm h, the said diaphragm-holding shell and diaphragmbeing free to pivot on the pivotal connection between the link and thediaphragm-carrying arm h. Of course the head of the bolt o limits theoutward swing of the diaphragm-holding shell and the diaphragm, and thislimit is so fixed as to just allow the button n to clear the toothedperiphery of the actuator g. On the'side of the diaphragm-holding shelllc opposite the link j an ear g is provided, to which may be fastened awire cord or other drafting appliance r, which may be passed through aBowden tube s to a position within easy reach of the driver of the car.

Normally the contact button iskept out of contact with the toothedperiphery of the actuatorl by means of the spring which swings the bell,diaphragm-holding shell and diaphragm outwardly just enough to allow thebutton to clear the teeth of the actuator. It is desirable that theclearance be kept as small as possible so as to minimize the amount ofpull necessary to bring the horn into operative relation with respect tothe actuator so that a button (if desired) can be used to pull the draftdevice r when the button is pushed and the horn is y operated.

phragm-carrying arm Supported 01.1 Said bearing, a diaphragm actuatorsecured to one of Said rotating` members so as to rotate therewith, avdiaphragm-holding shell pivoted to the said diaphragin-carrying arrn, adiaphragm carried thereby, a spring for spacing the diaphragm-holdingshell between the diaphragm-carrying arin and the diaphragm-holdingshell, and means for drawing the diaphragm into operative engagementwith the actuator against the force of said spring.

2. In a device of the character described, the combination of a fansupport, a bearing carried thereby, a fan and fan pulley rotatablymounted on said bearing, a diaphragin actuator secured to one of saidrotating parts to rotate therewith', an arin secured to said bearing andextending in a general radial direction, a diaphragm-holding shellprovided with a rearwardly eX- tending lug pivoted to said arm, adiaphragm carried by Said shell and normally tending away from saiddiaphragm-carrying arni and diaphragm actuator, and ineans for drawingthe diaphragm into operative Contact with the diaphragm actuator.

In testimony whereof, I sign this specification.

CHARLES Gr. TROSIEN.

Copies of this patent 'may be obtained for five cents each, byaddressing the Commissioner of Patents. Washington, ID. C.

